Soldiers' dream : a centennial history of Lincoln University of Missouri

A Pictorial History of Lincoln University from 1866-1966.

Disrupting evolutionary processes: The effect of habitat fragmentation on collared lizards in the Missouri Ozarks

Humans affect biodiversity at the genetic, species, community, and ecosystem levels. This impact on genetic diversity is critical, because genetic diversity is the raw material of evolutionary change, including adaptation and speciation. Two forces affecting genetic variation are genetic drift (which decreases genetic variation within but increases genetic differentiation among local populations) and gene flow (which increases variation within but decreases differentiation among local populations). Humans activities often augment drift and diminish gene flow for many species, which reduces genetic variation in local populations and prevents the spread of adaptive complexes outside their population of origin, thereby disrupting adaptive processes both locally and globally within a species. These impacts are illustrated with collared lizards (Crotaphytus collaris) in the Missouri Ozarks. Forest fire suppression has reduced habitat and disrupted gene flow in this lizard, thereby altering the balance toward drift and away from gene flow. This balance can be restored by managed landscape burns. Some have argued that, although human-induced fragmentation disrupts adaptation, it will also ultimately produce new species through founder effects. However, population genetic theory and experiments predict that most fragmentation events caused by human activities will facilitate not speciation, but local extinction. Founder events have played an important role in the macroevolution of certain groups, but only when ecological opportunities are expanding rather than contracting. The general impact of human activities on genetic diversity disrupts or diminishes the capacity for adaptation, speciation, and macroevolutionary change. This impact will ultimately diminish biodiversity at all levels.

Paddlefish Management in Missouri

Paddlefish populations have begun to decline throughout their historic range but are still found in 22 states in the southeastern and midwestern United States. This capstone project investigates problems facing paddlefish management including, pollution, habitat loss, poaching, and the illegal caviar trade. A combination of four management options is beneficial for the species by increasing public knowledge and awareness of what paddlefish require for survival, allowing paddlefish to be used as a natural resource. After comparing a typical state paddlefish management plan and the plan developed and used in Missouri, it is apparent that a national paddlefish management plan template is necessary for affected states. A plan provides direction for effectively maintaining paddlefish stocks, according to state specific management goals.

Annual report of the State Horticultural Society of Missouri.

44, 1902

The University of Missouri studies.

2

Annual report of the Missouri State Board of Agriculture.

39, 1906

Annual report of the State Horticultural Society of Missouri.

38, 1895

Annual report of the State Horticultural Society of the State of Missouri.

35, 1892

Report of the Missouri State Horticultural Society for the year ...

28, 1886

Annual report of the State Horticultural Society of Missouri.

42, 1900

Annual report of the State Horticultural Society of Missouri.

36, 1893

Annual report of the State Horticultural Society of Missouri.

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Annual report of the State Horticultural Society of Missouri.

48

Annual report of the State Horticultural Society of Missouri.

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